<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>清除图片下方出现的空白间隙</title>
    <style>
        .demo {
            border: 1px solid #000;
        }

        img {
            width: 100px;
            height: 100px;
        }
    </style>
</head>

<body>
    <div class="demo">
        <img src="img/choose2.jpg">
    </div>
</body>

</html>